<template>
  <el-image
    :src="realSrc"
    fit="cover"
    :style="`width:${realWidth};height:${realHeight};`"
    :preview-src-list="realSrcList"
  >
    <template #error>
      <div class="image-slot">
        <el-icon>
          <Picture />
        </el-icon>
      </div>
    </template>
  </el-image>
</template>

<script setup>
import { Picture } from '@element-plus/icons-vue'
import { isExternal } from '@/utils/validate.js'

const props = defineProps({
  src: {
    type: String,
    required: true
  },
  width: {
    type: [Number, String],
    default: ''
  },
  height: {
    type: [Number, String],
    default: ''
  }
})

// 计算实际显示的图片源
const realSrc = computed(() => {
  const real_src = props.src.split(',')[0]
  if (isExternal(real_src)) {
    return real_src
  }
  return import.meta.env.VITE_APP_BASE_API + real_src
})

// 计算预览图片列表
const realSrcList = computed(() => {
  const real_src_list = props.src.split(',')
  const srcList = []
  real_src_list.forEach(item => {
    if (isExternal(item)) {
      return srcList.push(item)
    }
    return srcList.push(import.meta.env.VITE_APP_BASE_API + item)
  })
  return srcList
})

// 计算实际宽度
const realWidth = computed(() => {
  return typeof props.width === 'string' ? props.width : `${ props.width }px`
})

// 计算实际高度
const realHeight = computed(() => {
  return typeof props.height === 'string' ? props.height : `${ props.height }px`
})
</script>

<style lang="scss" scoped>
.el-image {
  border-radius: 5px;
  background-color: #ebeef5;
  box-shadow: 0 0 5px 1px #ccc;
  transition: all 0.6s;
  margin-top: 7px;

  :deep(.el-image__inner) {
    transition: all 0.3s;
    cursor: pointer;

    &:hover {
      transform: scale(1.2);
    }
  }

  &:hover {
    box-shadow: 0 0 5px 1px #409EFF;
  }

  :deep(.image-slot) {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
    color: #909399;
    font-size: 30px;
  }
}
</style>
